#include <pthread.h>

class Mutex
{
public:
    Mutex(pthread_mutex_t *lock)
        :lock_(lock)
    {}
    void Lock()
    {
        pthread_mutex_lock(lock_);
    }
    void Unlock()
    {
        pthread_mutex_unlock(lock_);
    }
    ~Mutex()
    {}
private:
    pthread_mutex_t *lock_;
};

class LockGuard
{
public:
    LockGuard(pthread_mutex_t *lock)
        :mutex_(lock)
    {}
    ~LockGuard()
    {
        mutex_.Unlock();
    }
private:
    Mutex mutex_;
};

